On Wed, 3 Mar 2021, Rick Moen wrote:

> Quoting g4sra via Dng (dng@???):
>
> > What is the netiquette on this list for changing subject lines.
> > I hate hijacking threads but I also hate breaking them.
> > Which is the lesser of the two evils ?
>
> Standards-compliant mailers' threading doesn't get broken by altering
> the Subject header. (Last I heard, MS-Outlook still didn't follow
> the RFCs in that area, and thus gets adversely affected. Probably,
> some other common mailers share that defect.)

for the record alpine is broken in that area. As far as I can make out it
just uses the subject line to "thread" emails (modulo the various "re:"s
etc)

Jim